Do you need the SM vertices, or can you just manually define an array of vectors for each point? Please, be more detailed about the effect you’re trying to achieve.
For actual mesh data you can google “c++ static mesh vertices ue4” and find this. Remember to check ‘Allow CPUAccess’. In my experience it wasn’t worth the effort for my vertex snapping code.
I would just define the points as local positions using a vector array, then transform their location to WS when needed.